[Dri-patches] [ dri-Bugs-512450 ] R128 intermittant line dropout

[<no...@so...>]

Bugs item #512450, was opened at 2002-02-03 10:51
You can respond by visiting: 
http://sourceforge.net/tracker/?func=detail&atid=100387&aid=512450&group_id=387

Category: ATI OpenGL
Group: Rendering Error
Status: Open
Resolution: None
Priority: 5
Submitted By: Joesph Krahn (joekrahn)
Assigned to: Nobody/Anonymous (nobody)
Summary: R128 intermittant line dropout

Initial Comment:
Line objects intermittantly have bits missing. It seems
to happen only with line smoothing enabled, but is
coupled to an intermittant depth clipping problem where
solid objects do not obscure lines or bitmap text as
they should. Bad frames exhibit both problems. The
clipping problem occurs whether or not line smooth is
on. It seems like maybe the Z buffer or Z test is
getting randomly corrupted.

I don't have a simple demo source. It occurs in the
closed-source
crystallography program "O". I will try to put some
demo source together. For now, I'm attaching a picture
from the same app illustrating both errors. Neither
error occurs with Mesa rendering.

The bad frames are only about 1 out of 30. Also, the
errors don't occur for all blend modes. (I don't know
what the blend modes are because I don't have the
source.)


----------------------------------------------------------------------

You can respond by visiting: 
http://sourceforge.net/tracker/?func=detail&atid=100387&aid=512450&group_id=387